SPECIFICATION FOR THE COLT JETSTREAM IMPULSE JET FAN
Manufacturer
Colt International Limited
New Lane, Havant, Hampshire, PO9 2LY.
Tel. 023 9245 1111
Fax. 023 9245 4220
info@coltgroup.com
General
The impulse car park jet fan shall be capable of duties of up to 1.8 m3/ sec and thrusts of up to 50N. It shall comprise (select) a 315mm (or) 400mm fan diameter size, with (select) Unidirectional (or) Truly Reversible airflow, with a (select) two speed (or) single speed motor, for (select) ambient (or) high temperature smoke conditions, tested to the European Standard EN 12101-3: 2002. The unit shall be designed for directing exhaust fumes (in day to day mode) and smoke in a controlled manner towards the main extract positions of the car park.
Fan Casings
The fan casing and integral mounting feet for mounting the unit to the car park ceiling shall provide a long lasting robust construction. All parts shall be manufactured from 4 mm heavy gauge mild sheet steel, roll formed and welded, then hot dipped galvanised to BS 729 after fabrication.
Impeller Assemblies
Adjustable pitch aerofoil impellers shall be provided with blades made from high quality pressure die cast aluminium (LM6) or GRP both natural finish. Impellers shall be factory set at an angle to provide specific performance of thrust and volume flow rate. Hubs shall be made from die cast aluminium alloy (LM24). High temperature impellers will have their blades positively locked by pinning, for added security, for operation in smoke mode. Assembled impellers are to be dynamically balanced to Grade 6.3.
Fan Unit
The motor is to be totally enclosed, air stream cooled, metric frame to IP55 standard. It shall have Class F or Class H insulation for normal continuous duty or smoke conditions, once only at 300°C for 1 hour. The motor shall be either Single Speed or Two Speed. Two Speed motors shall have a Dahlander winding with direct starting at both speeds. The motor shall have flying leads connected to an external padlockable isolator switch to IP65 Standard.
Silencers
An Inlet and Outlet silencer shall be mounted either side of the fan housing, with integral bell mouth to provide reduced sound level and optimal performance. Silencers are constructed from 1.5mm pre-galvanised perforated sheet steel, lapped and riveted, containing a pre-galvanised perforated sheet. Silencers shall sleeve onto the fan casing where they are secured, to provide a low profile. The Inlet silencer has a zinc-plated guard attached, whilst the outlet silencer shall have a 304 stainless steel deflector, to guide air in the direction required.
Finishes
The unit shall be hot dipped galvanised as standard finish. The unit can be powder coated in any standard RAL colour as required (at additional cost).
Certification
The unit shall be designed and manufactured with procedures as defined in BS EN ISO 9001: 2000. The unit shall be tested at elevated temperatures in accordance with the requirements of the European standard EN 12101-3: 2002 and achieve a F300 rating. The unit shall be tested to ISO 13350: 1999, Performance Testing of Jet Fans.
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